Arc lock and splicing screen

Abstract

In order to overcome the problem that the existing arc lock has a complex structure and is difficult to accurately adjust the angle, the present invention provides an arc lock, including an angle control mechanism and a locking mechanism; the angle control mechanism includes a first mounting structure, a first sliding mechanism, a second sliding mechanism and a positioning mechanism, the first mounting structure is used to install a display module; the locking mechanism includes a second mounting structure, the second mounting structure is used to install another display module, the first sliding mechanism and the second sliding mechanism can extend out of the first mounting structure and abut against the second mounting structure, the positioning mechanism is used to position the length of the first sliding mechanism and the second sliding mechanism extending out of the first mounting structure, and the first sliding mechanism and the second sliding mechanism are located on both sides of the locking rod. The arc lock provided by the present invention adjusts the angle of the first mounting structure and the second mounting structure through the length difference between the first sliding mechanism and the second sliding mechanism on both sides of the locking rod, thereby adjusting the angle between the display modules, and has a simple structure and can accurately adjust the arc.

Description

Technical Field

[0001] The invention belongs to the technical field of LED display screens, and in particular relates to an arc lock and a spliced ​​screen. Background Art

[0002] With the development of LED display technology, its application field is becoming more and more extensive, and the development trend of the LED display industry is high density, multiple shapes, and convenient and quick installation. High density means that a large screen is needed, and multiple shapes mean that the shape of the entire LED display will be varied according to needs. Because large-screen LED display screens are not easy to carry, the existing method is generally to splice multiple small LED display screens to form a large-screen LED display screen. Each small LED display screen includes a frame and an LED display module installed on one side of the frame. When assembling, just splice the frames together. In the prior art, most of the spliced ​​frames are on the same plane, that is, spliced ​​into a plane; however, in specific application scenarios, for example, when the overall presentation effect of the LED display screen is a curved surface, it is necessary to consider angle splicing (also called arc splicing). Angle splicing is basically spliced ​​by angle locks or arc locks. An arc lock groove is opened in the box body, and the arc lock is placed in the arc lock groove to make an arc connection between the two boxes.

[0003] Most existing arc locks use an arc guide structure, which is locked or positioned with a positioning marble after adjusting the required angle in the arc track through an adjustment block. They are large in size and often limited to a single angle adjustment, and cannot adjust the angle adaptively. There are also some arc locks with multi-angle adjustment, but the arc locks do not have a mechanism to accurately limit the angle, resulting in a large angle clamping deviation, which affects the overall assembly and viewing effect. Summary of the invention

[0004] In view of the problem that the existing arc lock has a complex structure and is difficult to accurately adjust the angle, the present invention provides an arc lock and a spliced ​​screen.

[0005] The technical solution adopted by the present invention to solve the above technical problems is as follows:

[0006] In one aspect, the present invention provides an arc lock, comprising an angle control mechanism and a locking mechanism;

[0007] The angle control mechanism comprises a first mounting structure and a first sliding mechanism, a second sliding mechanism and a positioning mechanism arranged on the first mounting structure, wherein the first mounting structure is used to mount a display module;

[0008] The locking mechanism includes a second mounting structure, and the second mounting structure is used to mount another display module;

[0009] The first mounting structure and the second mounting structure are arranged adjacent to each other, the first sliding mechanism and the second sliding mechanism can extend out of the first mounting structure and abut against the second mounting structure, and the positioning mechanism is used to position the length of the first sliding mechanism and the second sliding mechanism extending out of the first mounting structure;

[0010] The first mounting structure and the second mounting structure are locked or unlocked with each other by arranging a locking rod and a limiting mechanism, and the first sliding mechanism and the second sliding mechanism are located on both sides of the locking rod.

[0011] Optionally, the first mounting structure includes a mounting seat and a shell, the shell is fixedly connected to the mounting seat, the mounting seat has a first mounting surface and a first contact surface, the first mounting surface is used to mount a display module, a first through hole and a second through hole are formed on the first contact surface, the first sliding mechanism can penetrate the first through hole, and the second sliding mechanism can penetrate the second through hole;

[0012] The second mounting structure includes a base, which has a second mounting surface and a second contact surface. The second mounting surface is used to mount another display module. The locking rod is slidably connected to the base. The locking rod can be locked with the limiting mechanism so that the first sliding mechanism and the second sliding mechanism abut against the second contact surface to lock and fix the angle control mechanism and the locking mechanism.

[0013] Optionally, the positioning mechanism includes a knob, an upper cam, a rotating shaft and a lower cam, one end of the rotating shaft is fixedly connected to the upper cam and the knob, the rotating shaft is passed through the shell, the other end of the rotating shaft is fixedly connected to the lower cam and is rotatably connected to the mounting seat, the upper cam and the lower cam are fan-shaped structures, the outer peripheries of the upper cam and the lower cam have irregular grooves, the end of the first sliding mechanism abuts against the outer periphery of the upper cam, the end of the second sliding mechanism abuts against the outer periphery of the lower cam, the knob is provided with an angle mark, and the outer surface of the shell is provided with an angle indication point corresponding to the position of the knob.

[0014] Optionally, the first sliding mechanism comprises a first upper end cover, a first sliding rod and a first lower end cover, the first upper end cover and the first lower end cover are respectively fixed to ends of the first sliding rod, and the first sliding mechanism is movably disposed in the housing;

[0015] The second sliding mechanism comprises a second upper end cover, a second sliding rod and a second lower end cover, wherein the second upper end cover and the second lower end cover are respectively fixed to ends of the second sliding rod, and the second sliding mechanism is movably disposed in the housing;

[0016] The positioning mechanism is used to drive the first sliding rod and the second sliding rod to move relative to the mounting seat, so that the end of the first sliding rod is away from or close to the first contact surface and the end of the second sliding rod is away from or close to the first contact surface, so as to adjust the angle between the first mounting surface and the second mounting surface.

[0017] Optionally, the first sliding mechanism further includes a first spring, and the second sliding mechanism further includes a second spring, the first spring is arranged between the first contact surface of the mounting seat and the first upper end cover and / or the first lower end cover, and the first spring is used to connect the first sliding mechanism with the upper cam without gap;

[0018] The second spring is arranged between the first contact surface of the mounting seat and the second upper end cover and / or the second lower end cover, and the second spring is used to connect the second sliding mechanism and the lower cam without gap.

[0019] Optionally, the limiting mechanism includes a limiting block, an arc-shaped adjustment block and a third spring, the arc-shaped adjustment block is arranged between the outer shell and the mounting seat, the limiting block is arranged between the outer shell and the arc-shaped adjustment block, the third spring is arranged between the mounting seat and the limiting block, and the third spring provides a driving force for the limiting block to move in the direction of the locking rod so that the limiting block locks the locking rod.

[0020] Optionally, the locking mechanism also includes a fixing part, the locking rod has a hollow portion passing through the locking rod, the length of the hollow portion is greater than the width of the fixing part, the fixing part is passed through the hollow portion and slidably connects the locking rod to the base, the base has a third through hole for the locking rod to pass through, and the locking rod can move forward and backward relative to the base.

[0021] Optionally, the locking mechanism also includes a handle and a fourth spring, one end of the locking rod is provided with spaced grooves, the other end of the locking rod is provided with a thread, the handle is rotatably connected to the locking rod, the fourth spring is sleeved on the locking rod and arranged between the handle and the base, and a fourth through hole is also opened between the first through hole and the second through hole, and the fourth through hole is used for the locking rod to pass through the angle control mechanism.

[0022] Optionally, the angle control mechanism further includes a limit block control piece, the limit block control piece is an L-shaped structure, and the limit block control piece is inserted into the shell and is located above the limit block.

[0023] On the other hand, the present invention also provides a splicing screen, comprising at least two LED display modules and the above-mentioned arc lock, wherein the angle control mechanism is connected to an LED display module, the locking mechanism is connected to another adjacent LED display module, and the angle mechanism is fixedly connected to the locking mechanism.

[0024] Beneficial effects of the present invention: Compared with the prior art, the arc lock provided by the present invention controls the length of the first sliding mechanism and the second sliding mechanism extending out of the first mounting structure through the positioning mechanism, thereby forming a length difference between the first sliding mechanism and the second sliding mechanism on both sides of the lock rod, and then through the coordinated use of the lock rod and the limit mechanism, the ends of the first sliding mechanism and the second sliding mechanism can be abutted against the second mounting structure, thereby adjusting the angle of the first mounting structure and the second mounting structure, and then realizing the angle adjustment between the display modules. The arc lock has a simple structure and is easy to operate. The positioning mechanism can accurately change the distance of movement of the first sliding mechanism and the second sliding mechanism, thereby accurately controlling the curvature of the spliced ​​screen. The lock rod and the limit mechanism can lock or unlock each other, which is convenient for the installation and disassembly of the display module and improves the installation quality and efficiency of the spliced ​​screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of an arc lock provided by an embodiment of the present invention;

[0026] Figure 2 yes Figure 1 Top view of the middle arc lock;

[0027] Figure 3 yes Figure 2 The angle along the BB line is marked as -7.5° in the cross-sectional view;

[0028] Figure 4 yes Figure 2 The angle along the BB line is marked as a 0° section view;

[0029] Figure 5 yes Figure 2 The angle along the BB line is marked as a 7.5° section view;

[0030] Figure 6 is a structural schematic diagram of an angle control mechanism provided by an embodiment of the present invention;

[0031] Figure 7 is a structural schematic diagram of a locking mechanism provided by an embodiment of the present invention;

[0032] Figure 8 1 is a top view of a locking mechanism provided in accordance with an embodiment of the present invention.

[0033] The reference numerals in the drawings of the specification are as follows:

[0034] 1. Angle control mechanism; 11. First mounting structure; 111. Mounting seat; 1111. First mounting surface; 1112. First contact surface; 1113. First through hole; 1114. Second through hole; 1115. Fourth through hole; 112. Housing; 1121. Angle indication point; 12. First sliding mechanism; 121. First upper end cover; 122. First slide bar; 123. First lower end cover; 124. First spring; 13. Second sliding mechanism; 131. Second upper end cover; 132. Second slide bar; 133. Second lower end cover; 134. Second spring; 14. Fixed Positioning mechanism; 141. knob; 1411. angle mark; 142. upper cam; 143. rotating shaft; 144. lower cam; 15. limiting mechanism; 151. limiting block; 1511. protruding portion; 152. arc-shaped adjusting block; 153. third spring; 16. limiting block control plate; 2. locking mechanism; 21. second mounting structure; 211. base; 2111. second mounting surface; 2112. second contact surface; 2113. third through hole; 22. locking rod; 221. groove; 222. hollow portion; 23. fixing piece; 24. handle; 25. fourth spring. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] It should be noted that all directional indications in the embodiments of the present invention (such as below, front and back...) are only used to explain the relative position relationship, movement status, etc. between the structures under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, descriptions such as “first”, “second”, etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features.

[0038] Please refer to Figure 1-Figure 8 , an embodiment of the present invention provides an arc lock, comprising an angle control mechanism 1 and a locking mechanism 2;

[0039] The angle control mechanism 1 comprises a first mounting structure 11 and a first sliding mechanism 12, a second sliding mechanism 13 and a positioning mechanism 14 arranged on the first mounting structure 11, wherein the first mounting structure 11 is used to mount a display module;

[0040] The locking mechanism 2 includes a second mounting structure 21, and the second mounting structure 21 is used to mount another display module;

[0041] The first mounting structure 11 and the second mounting structure 21 are arranged adjacent to each other, the first sliding mechanism 12 and the second sliding mechanism 13 can extend out of the first mounting structure 11 and abut against the second mounting structure 21, and the positioning mechanism 14 is used to position the length of the first sliding mechanism 12 and the second sliding mechanism 13 extending out of the first mounting structure 11;

[0042] The first mounting structure 11 and the second mounting structure 21 are locked or unlocked with each other by providing a locking rod 22 and a limiting mechanism 15 , and the first sliding mechanism 12 and the second sliding mechanism 13 are located on both sides of the locking rod 22 .

[0043] The arc lock provided by the present invention controls the length of the first sliding mechanism 12 and the second sliding mechanism 13 extending out of the first mounting structure 11 through the positioning mechanism 14, thereby forming a length difference between the first sliding mechanism 12 and the second sliding mechanism 13 on both sides of the lock rod 22, and then the ends of the first sliding mechanism 12 and the second sliding mechanism 13 can be abutted against the second mounting structure 21 through the coordinated use of the lock rod 22 and the limiting mechanism 15, thereby adjusting the angle of the first mounting structure 11 and the second mounting structure 21, thereby adjusting the angle between the display modules. The arc lock has a simple structure and is easy to operate. The positioning mechanism 14 can accurately change the distance of movement of the first sliding mechanism 12 and the second sliding mechanism 13, thereby accurately controlling the curvature of the spliced ​​screen. The lock rod 22 and the limiting mechanism 15 can be locked or unlocked with each other, which facilitates the installation and disassembly of the display module and improves the installation quality and efficiency of the spliced ​​screen.

[0044] In some embodiments, the first mounting structure 11 includes a mounting seat 111 and a housing 112, the mounting seat 111 is fixedly connected to the housing 112, the mounting seat 111 has a first mounting surface 1111 and a first contact surface 1112, the first mounting surface 1111 is used to mount a display module, the first contact surface 1112 is provided with a first through hole 1113 and a second through hole 1114, the first sliding mechanism 12 can penetrate the first through hole 1113, and the second sliding mechanism 13 can penetrate the second through hole 1114;

[0045] The second mounting structure 21 includes a base 211, and the base 211 has a second mounting surface 2111 and a second contact surface 2112. The second contact surface 2112 is used to install another display module. The locking rod 22 is slidably connected to the base 211, and the locking rod 22 can be locked with the limiting mechanism 15, so that the first sliding mechanism 12 and the second sliding mechanism 13 abut against the second contact surface 2112 to lock and fix the angle control mechanism 1 and the locking mechanism 2.

[0046] During the installation process, the first mounting surface 1111 of the angle control mechanism 1 and the second mounting surface 2111 of the locking mechanism 2 are respectively fixed on the frames of two adjacent LED unit display screens. The first sliding mechanism 12 and the second sliding mechanism 13 are driven to move different distances through the positioning mechanism 14, and then the locking rod 22 of the locking mechanism 2 is inserted into the angle control mechanism 1, and the locking rod 22 is rotated to adjust the gap between the locking rod 22 and the limiting mechanism 15, so that the second contact surface 2112 of the locking mechanism 2 is tightly fitted with the ends of the first sliding mechanism 12 and the second sliding mechanism 13. At this time, the angle control mechanism 1 and the locking mechanism 2 are locked with each other, so that the two adjacent LE display modules are temporarily fixed to the required angle and spliced ​​into an arc-shaped LED display screen.

[0047] In some embodiments, the positioning mechanism 14 includes a knob 141, an upper cam 142, a rotating shaft 143 and a lower cam 144, one end of the rotating shaft 143 is fixedly connected to the upper cam 142 and the knob 141, the rotating shaft 143 is passed through the shell 112, the other end of the rotating shaft 143 is fixedly connected to the lower cam 144 and is rotatably connected to the mounting base 111, the upper cam 142 and the lower cam 144 are fan-shaped structures, the outer peripheries of the upper cam 142 and the lower cam 144 have irregular grooves, the end of the first sliding mechanism 12 abuts against the outer periphery of the upper cam 142, the end of the second sliding mechanism 13 abuts against the outer periphery of the lower cam 144, an angle mark 1411 is provided on the knob 141, and an angle indication point 1121 is provided on the outer surface of the shell 112 corresponding to the position of the knob 141.

[0048] When the knob 141 rotates under the action of an external force, it drives the upper cam 142 , the rotating shaft 143 and the lower cam 144 to rotate, so that the first sliding mechanism 12 and the second sliding mechanism 13 move different distances relative to the first contact surface 1112 .

[0049] The upper cam 142 is slidably connected to the end of the first sliding mechanism 12. The outer periphery of the upper cam 142 has an irregular groove. The first sliding mechanism 12 can slide relative to the outer periphery of the upper cam 142 when the knob 141 is rotated. When the rotation angle is different, the position where the first sliding mechanism 12 is connected to the outer periphery of the upper cam 142 is different. Since the outer edge of the upper cam 142 is an irregular groove structure, different points on the outer periphery of the upper cam 142 have different distances from the rotating shaft 143. By changing the rotation angle of the knob 141, the connection position of the first sliding mechanism 12 and the outer periphery of the upper cam 142 can be changed, thereby changing the distance between the end of the first sliding mechanism 12 and the rotating shaft 143, and finally changing the moving distance of the first sliding mechanism 12, so that the first sliding mechanism 12 extends or retracts the first contact surface 1112. In the same principle, the rotation of the lower cam 144 can change the moving distance of the second sliding mechanism 13. By reasonably designing the size and shape of the upper cam 142 and the lower cam 144, it is possible to achieve that the distance that the first sliding mechanism 12 moves relative to the first contact surface 1112 and the distance that the second sliding mechanism 13 moves relative to the first contact surface 1112 are different, thereby being able to adjust the angle of the first mounting structure 11 and the second mounting structure 21, thereby adjusting the angle between the display modules, thereby improving the convenience and accuracy of adjusting the curvature of the LED display screen.

[0050] The knob 141, the upper cam 142, the rotating shaft 143 and the lower cam 144 are fixedly connected. By rotating the knob 141, the upper cam 142, the rotating shaft 143 and the lower cam 144 can be indirectly driven to rotate, thereby ensuring the accurate rotation angle of the upper cam 142 and the lower cam 144, thereby achieving the accurate moving distance of the first sliding mechanism 12 and the second sliding mechanism 13, thereby achieving the accuracy of the installation angle of the arc-shaped LED display.

[0051] The angle mark 1411 and the angle indication point 1121 can intuitively display the splicing angle of two adjacent LED display screens to the operator, making it easy to adjust the curvature of the LED display screen.

[0052] Furthermore, the angle mark 1411 refers to the angle between the first mounting surface 1111 and the second mounting surface 2111 when the angle control mechanism 1 and the locking mechanism 2 are fixedly connected, and the angle mark 1411 may be 7.5°, 5°, 2.5°, 0°, -2.5°, -5°, or -7.5°.

[0053] The angle between the first mounting surface 1111 and the second contact surface 2112 is A. The first sliding mechanism 12 and the second sliding mechanism 13 are driven by the positioning mechanism 14 to move different distances, and the size of the angle A can be arbitrarily changed, so that the angle between the first mounting surface 1111 and the second mounting surface 2111 can be adjusted to any angle to meet the installation requirements of spliced ​​screens with different curvatures. For a clearer expression, three different angles A are selected as examples for explanation.

[0054] Figure 3 If A is 82.5°, the angle between the first mounting surface 1111 and the second mounting surface 2111 is -7.5°, and the angle mark 1411 pointed to by the angle indicating point 1121 is -7.5°, that is, the splicing angle of the two LED unit display screens is -7.5°.

[0055] Figure 4 If A is 90°, the angle between the first mounting surface 1111 and the second mounting surface 2111 is 0°, and the angle mark 1411 pointed to by the angle indicating point 1121 is 0°, that is, the joint angle of the two LED unit display screens is 0°, and the LED display screen is a rectangular screen.

[0056] Figure 5 Where A is 97.5°, the included angle between the first mounting surface 1111 and the second mounting surface 2111 is 7.5°, and the angle mark 1411 pointed to by the angle indicating point 1121 is 7.5°, that is, the splicing angle of the two LED unit display screens is 7.5°.

[0057] In some embodiments, the first sliding mechanism 12 includes a first upper end cover 121, a first sliding rod 122 and a first lower end cover 123, the first upper end cover 121 and the first lower end cover 123 are respectively fixed to the ends of the first sliding rod 122, and the first sliding mechanism 12 is movably disposed in the housing 112;

[0058] The second sliding mechanism 13 includes a second upper end cover 131, a second sliding rod 132 and a second lower end cover 133. The second upper end cover 131 and the second lower end cover 133 are respectively fixed to the ends of the second sliding rod 132. The second sliding mechanism 13 is movably disposed in the housing 112.

[0059] The positioning mechanism 14 is used to drive the first slide bar 122 and the second slide bar 132 to move relative to the mounting seat 111, so that the end of the first slide bar 122 is away from or close to the first contact surface 1112 and the end of the second slide bar 132 is away from or close to the first contact surface 1112, so as to adjust the angle between the first mounting surface 1111 and the second mounting surface 2111.

[0060] Furthermore, the first slide bar 122 is a U-shaped structure, and has a fifth through hole for the fixing member to pass through. The first upper end cover 121 and the first lower end cover 123 are respectively fixed to the ends of the first slide bar 122, which can increase the stability of the movement of the first slide bar 122, avoid shaking, prevent affecting the accuracy of the arc adjustment, and reduce the weight of the arc lock.

[0061] Preferably, the first sliding rod 122 and the second sliding rod 132 have the same shape and size, which is conducive to accurately controlling the moving distance of the first sliding mechanism 12 and the second sliding mechanism 13 and increasing the reliability of the arc lock.

[0062] In some embodiments, the first sliding mechanism 12 further includes a first spring 124, and the second sliding mechanism 13 further includes a second spring 134, the first spring 124 is disposed between the first contact surface 1112 of the mounting seat 111 and the first upper end cover 121 and / or the first lower end cover 123, and the first spring 124 is used to connect the first sliding mechanism 12 with the upper cam 142 without gap;

[0063] The second spring 134 is disposed between the first contact surface 1112 of the mounting seat 111 and the second upper end cover 131 and / or the second lower end cover 133 , and the second spring 134 is used to connect the second sliding mechanism 13 and the lower cam 144 without gap.

[0064] The first spring 124 provides a driving force for the first sliding mechanism 12 in the direction of the rotating shaft 143, so that the first sliding mechanism 12 is connected to the upper cam 142 without gap, and the first sliding mechanism 12 can move forward and backward relative to the mounting seat 111. Similarly, the second spring 134 provides a driving force for the second sliding mechanism 13 in the direction of the rotating shaft 143, so that the second sliding mechanism 13 is connected to the lower cam 144 without gap, and the second sliding mechanism 13 can move forward and backward relative to the mounting seat 111.

[0065] In some embodiments, the limiting mechanism 15 includes a limiting block 151, an arc adjustment block 152 and a third spring 153. The arc adjustment block 152 is arranged between the outer shell 112 and the mounting seat 111, the limiting block 151 is arranged between the outer shell 112 and the arc adjustment block 152, and the third spring 153 is arranged between the mounting seat 111 and the limiting block 151. The third spring 153 provides a driving force for the limiting block 151 to move in the direction of the locking rod 22, so that the limiting block 151 locks the locking rod 22.

[0066] The limit block 151 has a protrusion 1511 that matches the groove 221 on the locking rod 22. The third spring 153 provides a driving force for the limit block 151 to move in the direction of the locking rod 22. Under the driving force, the protrusion 1511 of the limit block 151 is tightly embedded in the groove 221 on the locking rod 22, so that the angle control mechanism 1 and the locking mechanism 2 are locked with each other, thereby fixing two adjacent LED unit display screens in connection, with a simple structure and easy installation and maintenance.

[0067] Please refer to Figure 7-Figure 8 In some embodiments, the locking mechanism 2 also includes a fixing member 23, and the locking rod 22 has a hollow portion 222 that passes through the locking rod 22, and the length of the hollow portion 222 is greater than the width of the fixing member 23. The fixing member 23 is passed through the hollow portion 222 and slidably connects the locking rod 22 to the base 211. The base 211 has a third through hole 2113 for the locking rod 22 to pass through, and the locking rod 22 can move forward and backward relative to the base 211.

[0068] The fixing member 23 is used to slidably connect the locking rod 22 with the base 211 to prevent the locking rod 22 from rotating under the action of external force, thereby affecting the locking function of the limit block 151 and the groove 221. The hollow portion 222 is a rectangular structure, and the length of the hollow portion 222 is greater than the width of the fixing member 23, so that the locking rod 22 can move forward and backward with the fixing member 23 as the axis. The fixing member 23 can adopt the fixing members used in the field, without special limitation here, such as screws, pins, etc.

[0069] In some embodiments, the locking mechanism 2 also includes a handle 24 and a fourth spring 25, one end of the locking rod 22 is provided with spaced grooves 221, the other end of the locking rod 22 is provided with a thread, the handle 24 is threadedly rotatably connected to the locking rod 22, the fourth spring 25 is sleeved on the locking rod 22 and is arranged between the handle 24 and the base 211, and a fourth through hole 1115 is also opened between the first through hole 1113 and the second through hole 1114, and the fourth through hole 1115 is used for the locking rod 22 to penetrate the angle control mechanism 1.

[0070] The setting of the fourth spring 25 increases the stability of the locking mechanism 2. The handle 24 is connected to the locking rod 22 by threads. Under the action of external force, the handle 24 can be rotated to adjust the gap between the locking rod 22 and the limit block 151, so that the locking mechanism 2 can fit tightly with the angle control mechanism 1, which is beneficial to increase the stability of the installation and improve the splicing efficiency of the LED display.

[0071] During the installation of the splicing screen, when the handle 24 rotates counterclockwise under the action of external force, the locking rod 22 moves toward the direction close to the angle control mechanism 1, thereby driving the second contact surface 2112 of the locking mechanism 2 close to the ends of the first sliding mechanism 12 and the second sliding mechanism 13. When the handle 24 cannot be rotated, it indicates that the angle control mechanism 1 and the locking mechanism 2 are fixedly connected.

[0072] In some embodiments, the angle control mechanism 1 further includes a limit block control piece 16 , which is an L-shaped structure. The limit block control piece 16 is inserted into the housing 112 and is located above the limit block 16 .

[0073] As described above, when the protrusion 1511 is embedded in the groove 221, the angle control mechanism 1 and the locking mechanism 2 are fixedly connected and locked with each other to achieve the installation of the splicing screen. However, when the splicing screen is disassembled, it is necessary to separate the angle control mechanism 1 from the locking mechanism 2. Under the action of external force, the limit block control piece 16 moves downward. At this time, the limit block control piece 16 is embedded between the limit block 151 and the locking rod 22, so that the protrusion 1511 pops out from the groove 221, thereby releasing the locking effect of the limit block 151 on the locking rod 22, so that the locking rod 22 can be pulled out from the angle control mechanism 1.

[0074] During the disassembly of the splicing screen, when the handle 24 is rotated clockwise under the action of external force, the locking rod 22 moves in the direction away from the angle control mechanism 1, thereby driving the second contact surface 2112 of the locking mechanism 2 away from the ends of the first sliding mechanism 12 and the second sliding mechanism 13, pressing the limit block control plate 17, and pulling the locking rod 22 out of the fourth through hole 1115, thereby temporarily fixing the contact angle control mechanism 1 and the locking mechanism 2.

[0075] On the other hand, an embodiment of the present invention also provides a splicing screen, comprising at least two LED display modules and the arc lock as described above, wherein the angle control mechanism is connected to an LED display module, the locking mechanism is connected to another adjacent LED display module, and the angle mechanism is fixedly connected to the locking mechanism.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An arc lock, characterized in that: It includes an angle control mechanism and a locking mechanism; The angle control mechanism includes a first mounting structure and a first sliding mechanism, a second sliding mechanism and a positioning mechanism arranged on the first mounting structure, wherein the first mounting structure is used to mount a display module; The locking mechanism includes a second mounting structure, and the second mounting structure is used to mount another display module; The first mounting structure and the second mounting structure are arranged adjacent to each other, the first sliding mechanism and the second sliding mechanism can extend out of the first mounting structure and abut against the second mounting structure, and the positioning mechanism is used to position the length of the first sliding mechanism and the second sliding mechanism extending out of the first mounting structure; The first mounting structure and the second mounting structure are locked or unlocked with each other by setting a locking rod and a limiting mechanism, and the first sliding mechanism and the second sliding mechanism are located on both sides of the locking rod; The first mounting structure includes a mounting seat and a shell, the shell is fixedly connected to the mounting seat, the mounting seat has a first mounting surface and a first contact surface, the first mounting surface is used to mount a display module, a first through hole and a second through hole are formed on the first contact surface, the first sliding mechanism is penetrated through the first through hole, and the second sliding mechanism is penetrated through the second through hole; The second mounting structure includes a base, the base has a second mounting surface and a second contact surface, the second mounting surface is used to mount another display module, the locking rod is slidably connected to the base, the locking rod can be mutually locked with the limiting mechanism, so that the first sliding mechanism and the second sliding mechanism abut against the second contact surface, so as to lock and fix the angle control mechanism and the locking mechanism; The limiting mechanism comprises a limiting block, an arc-shaped adjusting block and a third spring, wherein the arc-shaped adjusting block is arranged between the housing and the mounting seat, the limiting block is arranged between the housing and the arc-shaped adjusting block, and the third spring is arranged between the mounting seat and the limiting block, and the third spring provides a driving force for the limiting block to move in the direction of the locking rod, so that the limiting block locks the locking rod; The positioning mechanism includes a knob, an upper cam, a rotating shaft and a lower cam, one end of the rotating shaft is fixedly connected to the upper cam and the knob, the rotating shaft is inserted into the shell, the other end of the rotating shaft is fixedly connected to the lower cam and is rotatably connected to the mounting seat, the upper cam and the lower cam are fan-shaped structures, the outer peripheries of the upper cam and the lower cam have irregular grooves, the end of the first sliding mechanism abuts against the outer periphery of the upper cam, the end of the second sliding mechanism abuts against the outer periphery of the lower cam, an angle mark is provided on the knob, and an angle indication point is provided on the outer surface of the shell corresponding to the position of the knob.

2. The arc lock according to claim 1, characterized in that: The first sliding mechanism comprises a first upper end cover, a first sliding rod and a first lower end cover, the first upper end cover and the first lower end cover are respectively fixed to the ends of the first sliding rod, and the first sliding mechanism is movably arranged in the housing; The second sliding mechanism comprises a second upper end cover, a second sliding rod and a second lower end cover, wherein the second upper end cover and the second lower end cover are respectively fixed to ends of the second sliding rod, and the second sliding mechanism is movably disposed in the housing; The positioning mechanism is used to drive the first sliding rod and the second sliding rod to move relative to the mounting seat, so that the end of the first sliding rod is away from or close to the first contact surface and the end of the second sliding rod is away from or close to the first contact surface, so as to adjust the angle between the first mounting surface and the second mounting surface.

3. The arc lock according to claim 2, characterized in that: The first sliding mechanism further includes a first spring, and the second sliding mechanism further includes a second spring, wherein the first spring is arranged between the first contact surface of the mounting seat and the first upper end cover and / or the first lower end cover, and the first spring is used to connect the first sliding mechanism with the upper cam without gap; The second spring is arranged between the first contact surface of the mounting seat and the second upper end cover and / or the second lower end cover, and the second spring is used to connect the second sliding mechanism and the lower cam without gap.

4. The arc lock according to claim 1, characterized in that: The locking mechanism also includes a fixing part, the locking rod has a hollow portion passing through the locking rod, the length of the hollow portion is greater than the width of the fixing part, the fixing part is passed through the hollow portion and slidably connects the locking rod to the base, the base has a third through hole for the locking rod to pass through, and the locking rod can move forward and backward relative to the base.

5. The arc lock according to claim 1, characterized in that: The locking mechanism also includes a handle and a fourth spring. One end of the locking rod is provided with spaced grooves, and the other end of the locking rod is provided with a thread. The handle is rotatably connected to the locking rod thread. The fourth spring is sleeved on the locking rod and arranged between the handle and the base. A fourth through hole is also opened between the first through hole and the second through hole. The fourth through hole is used for the locking rod to pass through the angle control mechanism.

6. The arc lock according to claim 1, characterized in that: The angle control mechanism further comprises a limit block control piece, which is an L-shaped structure and is passed through the housing and is located above the limit block.

7. A spliced ​​screen, characterized in that: It comprises at least two LED display modules and an arc lock as described in any one of claims 1 to 6, wherein the angle control mechanism is connected to one LED display module, the locking mechanism is connected to another adjacent LED display module, and the angle control mechanism is fixedly connected to the locking mechanism.

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